* Add authentication dialogs for sign in and sign up
- Implemented AuthDialog component to manage sign in and sign up modals.
- Created SignInModal and SignUpModal components for handling respective authentication processes.
- Added AuthFields component for reusable form fields and error handling.
- Updated various views to utilize the new authentication dialogs instead of traditional links.
- Enhanced user experience by allowing sign in and sign up actions to occur without full page reloads.
- Added feature specs for testing the functionality of the new dialogs.
* Refactor modals and input fields for improved accessibility and styling; adjust button sizes and text formatting
* Refactor authentication forms and modals for improved usability and accessibility; integrate reCAPTCHA handling and enhance error messaging
* Refactor SignUpModal layout for improved responsiveness and accessibility; organize fields into rows and enhance styling
* Refactor session view spec to streamline field checks; remove redundant test and retain essential content expectations
